Improvement in metal-sawing machines



J'. S. SEAMAN.

METAL-SAWING MACHINE. Ne.175,768.

:Patented A131414, 187e.

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L ,4. @bhw/MMT NAFEERS.. PHOTO-LITHOQHAPHER. WASHINGTON. D4 C JOSEPH S.SEAMAN, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO HIMSELF, JAMES B. YOUNG,AND ROBERT SLEETH, OF SAME PLAGE.

IMPROVEMENT IN METAL-SAWING MACHINES.

Specilication forming part of Letters Patent No. P75368, dated April 4,1376; application filed March 17, 11576.

, g To all whom 'it may concern:

Be it known that I, JOSEPH S. SEAMAN, of Pittsburg, county of Allegheny,State of Pennsylvania, have invented or discovered a new and usefulImprovement in Metal-Sawin g Machine; and I do hereby declare thefollow` ing to be a full, clear, concise, and exact de scriptionthereof, reference being had to the accompanying drawing making a partof this specification, in Which-like letters indicating like parts-Figure 1 is an end view, somewhat out of line, of my improved machine.Fig. 2 is a vertical longitudinal section, and Fig. 3 is an inverted orbottom plan view.

My invention relates to the construction of an improved machine sawing,cutting, or sevv ering metallic rods, bars, shafts, roll neeksror ends,or other metallic objects, by the use of a circular metallic disk, whichshall simultaneously revolve on its axis and revolve around the articleto be sawed, cut, or severed, the latter preferably remaining fixed inposition during the operation. .It also relates to suitable devices forfeeding' the disk toward the axial or central line of the article to becut, sawed, or severed, as the work progresses. On any suitablefoundation, A, I mount the machine by suitable rests A which rests arerigidly connected with the non-rotating rings B. Between these rings isa rotating box or drum, D, open, as at d, at one end, and either by ahead, d', at the other, or by radial arms connected with a hollow shaft,P, arranged in the axial line of the drum D. This drum is cylindrical inits general shape, but at or about midway of its length it has a Vdeepannular groove, a, which for convenience is made by the use of a flange,al, on each half of the box, and interposed washers a2, so that thebottom or outer periphery of the groove a shall be open through thegreater part of its length for the discharge of the cuttings. The twohalves ofthe box are secured together by bolts, or in other suitableWay. The annular groove a is designed to receive the edge of themetallic disk c, which does the cutting or severing while such disk isat rest and during the earlier part ol' its operation. The disk c, madeof any metal or metallic compound suit` en d play.

the article to be cnt.

able for the Work in view, is arranged in a hub, c1, the ends of whichare conical in form, as shown at c2, one end of such hub heiligrepresented in section and one in elevation. These conica-l ends play onthe inclined annular tracks e, which are arranged in the ends of thedrum D.

rlhe metallic article to be sawed, cut, or

severed, 1s projected in or near the axial line of the drum, across theedge ofthe disk, with the plane of cut or severance opposite such disk,and for this purpose it may be introduced through the hollow shaft P orfrom the opposite direction, and in such position it is supported inanysuitable way, such as is employed in kindred operations. A rapid rotarymotion is given to the drum D either by a crank, pulley, or gearingapplied to the hollow shaft P, or otherwise, as may be preferred, withthe result of causing the disk c to revolve rapidly on its own axis, andalso to be rotated with great rapidity around the article to be cut,sawed, or severed. The friction of the inclined annular track e on theconical ends c2 of the hub c1 is suflicient for this purpose, and theslope of the inclines and cones suffices to guide the disk in the pathdesired as against As the disk c thus passes around the object to becut, Ste., it performs the Work of cutting or severing to the extentthat its operative edge will play or is caused to move toward thecentral line of the article to be severed.

In order now to feed the disk c toward the axial or central line of thearticle to be cut, so that it shall gradually cut deeper, I make theinclined annular tracks e adjustable toward or from eachother, and asthey move toward each other, their inclined faces, acting like wedges onthe conical ends c2 of the hubs 01, gradually shift the latter, and withit the disk c, toward the central line of the machine, so that whilestill having the double rotary movement described it will cutprogressively into and around, and, if so desired, through,

device may be` employed to effect this feedmotion, but I have shown onesuch. Each inclined annular track e is connected by posts s with a ring,a, the outer peripheryr or edge of Any suitable eccentric which works ina groove formed between the plates o o. In such grooves the rings 'nrevolve along with the drum D. The plates o o are arranged insidethelixed frame-rings B B, and have pins or wrists x, which play in inclinedslots x in the exteriorrings. A lever, y, and link y1, connected to theplates o o by bolts y2, attord a means ot' gradually and at pleasureshift-ing thcse plates by giving them a partial rotation or a shortrotary movement.

As the frame-rings B are xed in place such partial rotation of the ringso o results in the wrists or pins x shifting each set of rings 0 o ntoward or from the other set, and through the fixed or rigid connectionot the posts s effects the desired adjustment ofthe two halves ot' thetrack e, so as to throw the disk c toward or from the center.

Various other modicat-ions otthe apparatus may be made, such as makingone track ixed while the other remains movable. Also, the hub cI may bearranged to work betweenannular inclined double racks, and the disk c bearranged on the end of the projecting spindle and outside of the drum.

In speaking of the action of the disk c, as effecting a cut orseverance, I do not wish to be understood as limiting myself to the uscof a disk which will merely cut, saw, or sever. I include in myinvention the elements hereinafter claimed, Whether the-disk describedbe found to act by cutting, sawing; severing, or, as some think, byfusing thel metal which lies in the path ot' its action; and I alsoinclude in my invention the substitution of an emery or other grinding`wheel in place of the disk, as a means of grinding metallic surfaces bya like operation. In such operation a longitudinal feed-motion should beimparted to the article operated on by means of suitable devices.

rlhe drum and tracks may vary from a circular to an elliptical form orother modification ot' a circle where the ont to be made in the articleis desired of `other than a circular shape.

I claim herein as myA invention- 1. The mode of transmitting power torunA a revolving saw or cutter by means ot' revolving frictionalbearings, substantially as set forth.

2. A circular saw or cutter having simultaneously a rotating motion onits own axis, and a revolving motion around the article or object to becut, sawed, or severed, substantially as set forth.

3. An adjustable, sloping-faced, ring-shaped track, e, in combinationwith the conically'- ended hub ot' a revolving saw or cutter,substantially as set forth.

4. An adjusting-lever, y, and suitable connections to, and incombination with, fixed frame-rings, movable adjusting-rings, adjustabletrack, `and eccentric feed, substantially .its Set forth.

5. The box or drum D made with groove a, open on its outer peripherythrough the greater part ot' its length, substantially as and for thepurpose set forth.

Iii-testimony whereof I have hereunto set my hand.

JOSEPH S. SEAMAN.

Witnesses:

JNO. A. WILSON, OLAUDIUs L. PARKER.

